Wave Propagation and Elasticity in Granular Soils: A Numerical Approach for a Micromechanical Perspective

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

Abstract

In this work we propose an overview of results about propagation of waves and elasticity in soils over the last 30 years. Remarkably, the chapter attempts to frame and compare contributions from soil mechanics, solid mechanics and physics. In a wide landscape, we focus on the micromechanical approach to the topic. Numerical simulations, based on the Discrete Element Method, have revealed the outmost role of the microstructure in characterising the elastic behaviour of granular soils. Following this evidence, microstructure-based continuum models have been developed and are discussed here, starting from the classical Effective Medium Theory. Finally, the chapter describes how micromechanical models can be extended to the case of immersed granular soils, and compares the new model with experiments on sand soils in a wide range of saturation degrees.
Original languageEnglish
Title of host publicationViews on Microstructures in Granular Materials
EditorsPasquale Giovine, Paolo Maria Mariano, Giuseppe Mortara
Place of PublicationCham
PublisherBirkhäuser
Pages107-135
ISBN (Electronic)978-3-030-49267-0
ISBN (Print)978-3-030-49266-3
DOIs
Publication statusPublished - 10 Nov 2020

Publication series

NameAdvances in Mechanics and Mathematics
PublisherBirkhäuser
Volume44
ISSN (Print)1571-8689
ISSN (Electronic)1876-9896
NameAdvances in Continuum Mechanics
PublisherBirkhäuser

Keywords

  • Granular materials
  • Wave propagation
  • Elasticity
  • Micromechanics
  • Discrete element method (DEM)

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